Correlations between propagation characteristics of guided ultrasonic waves and long bone fatigue

2012 ◽  
Vol 131 (4) ◽  
pp. 3424-3424
Author(s):  
Dean Ta ◽  
Zhenggang Zhang ◽  
Weiqi Wang
Keyword(s):  
Ultrasonic Waves ◽  
Long Bone ◽  
Propagation Characteristics ◽  
Guided Ultrasonic Waves

Application of guided ultrasonic waves for inspection of fuel tank floor

2007 ◽  
Author(s):  
Liudas Mažeika ◽  
Rymantas Kažys ◽  
Renaldas Raišutis ◽  
Andriejus Demčenko ◽  
Reimondas Sliteris
Keyword(s):  
Ultrasonic Waves ◽  
Fuel Tank ◽  
Guided Ultrasonic Waves

scholarly journals Application of the PCA to Guided Ultrasonic Waves to Evaluate Tensile Stress in a Solid Rod

2015 ◽  
Author(s):  
JABID MENDEZ ◽  
RODOLFO MEJIA ◽  
JOHN PINEDA ◽  
LUIS MUJICA ◽  
MAGDA RUIZ
Keyword(s):  
Tensile Stress ◽  
Ultrasonic Waves ◽  
Guided Ultrasonic Waves

Monitoring pipe wall integrity using fiber Bragg grating-based sensing of low-frequency guided ultrasonic waves

Ultrasonics ◽  
2018 ◽  
Vol 90 ◽  
pp. 120-124 ◽  
Author(s):  
Pabitro Ray ◽  
Balaji Srinivasan ◽  
Krishnan Balasubramaniam ◽  
Prabhu Rajagopal
Keyword(s):  
Fiber Bragg Grating ◽  
Pipe Wall ◽  
Low Frequency ◽  
Ultrasonic Waves ◽  
Bragg Grating ◽  
Guided Ultrasonic Waves

Effects of Briquettes with Different Crack Structures on Propagation Characteristics of Ultrasonic Waves under Wetting Conditions

2020 ◽  
Author(s):  
Gang Wang ◽  
Jinzhou Li ◽  
Huaixing Li ◽  
Zhiyuan Liu ◽  
Yanpei Guo ◽  
...  
Keyword(s):  
Particle Size ◽  
Ultrasonic Velocity ◽  
Bituminous Coal ◽  
Ultrasonic Attenuation ◽  
Crack Size ◽  
Ultrasonic Waves ◽  
Ultrasonic Frequency ◽  
Propagation Characteristics ◽  
Sample Mass ◽  
Velocity Increase

Abstract In order to examine the effect of briquettes with different crack structures on ultrasonic characteristics under different wetting conditions, a series of ultrasonic testing are carried out on briquettes at different wetting heights and the ultrasonic characteristics in these coal samples are explored. The results show that ultrasonic amplitude is positively correlated with the emission voltage, whereas ultrasonic frequency is negatively correlated with the emission voltage. Changes in both are closely related to the particle size and density. The ultrasonic velocity is positively correlated with the wetting degree. Sample mass has the greatest effect on the ultrasonic velocity, followed by particle size, and pressure has the smallest effect. At dry stage, ultrasonic velocity in gas coal is less than that in bituminous coal. The opposite is true in the fully wet state. The influence of crack thickness on ultrasonic velocity gradually increases with the wetting degree increasing. At dry stage, the velocity gradually increases with the crack dip increasing, while as the wetting height increasing, magnitude of velocity increase gradually decreases with the dip increasing. The ultrasonic attenuation in the briquettes reduces with the emission voltage enhancing. The attenuation decreases with sample particle size, crack thickness and crack size decreasing and with sample mass, pressure and crack dip increasing. The ultrasonic attenuation shows a trend of increase before decrease with the wetting height increasing. The attenuation of ultrasonic wave increases with wave velocity increasing for intact samples and shows a trend of increase before decrease for cracked samples.

Tube Inspection with an EMAT System using Guided Ultrasonic Waves

1988 ◽  
pp. 2305-2313 ◽  
Author(s):  
W. Böttger ◽  
H. Schneider ◽  
W. Weingarten
Keyword(s):  
Ultrasonic Waves ◽  
Guided Ultrasonic Waves
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